package homework;
import java.util.*;

public class Homework_P1M1_1{
    public static void main(String[] args) {
    int day=0;
    int month=0;
    int year=0;
    int sum=0;
    int leap;
    System.out.println("请输入年，月，日");
    Scanner input=new Scanner(System.in);
    year=input.nextInt();
    month=input.nextInt();
    day=input.nextInt();
    switch(month)   /*先计算某月以前月份的总天数*/
    {
    case 1:
        sum=0;break;
    case 2:
        sum=31;break;
    case 3:
        sum=59;break;
    case 4:
        sum=90;break;
    case 5: 
        sum=120;break;
    case 6:
        sum=151;break;
    case 7:
        sum=181;break;
    case 8:
        sum=212;break;
    case 9:
        sum=243;break;
    case 10:
        sum=273;break;
    case 11:
        sum=304;break;
    case 12:
        sum=334;break;
    default:
        System.out.println("请正确的输入年，月，日");break;
        }
    sum=sum+day;/*再加上某天的天数*/
    if(month>=0&&month<=12&&day>=1&&day<=31)/*判断控制台是否按照年月日正确输入*/
      {
    if(year%400==0||year%4==0&&year%100!=0)/*判断是否为闰年*/
    {   leap=1;
    }else{
        leap=0;
    }
    if(leap==1&&month>2)/*如果是闰年且月份大于2，总天数应该加一天*/
    {
        sum++;
        System.out.println(year+"年"+month+"月"+day+"号是这一年的第"+sum+"天。");
    }else {
        System.out.println(year+"年"+month+"月"+day+"号是这一年的第"+sum+"天。");
            }
        }
    }
}